公开(公告)号：US20180376120A1

公开(公告)日：2018-12-27

申请号：US16063441

申请日：2016-12-09

Applicant: B<>COM ,  UNIVERSITE RENNES 1 ,  INSTITUT MINES TELECOM

Inventor： Cambodge Bist ,  Remi Cozot ,  Gerard Madec

IPC: H04N9/77 ,  G06T5/00 ,  H04N9/64

Abstract: A method for processing a digital image for rendering on a display. The image includes image elements associated with color information represented in a colorimetric space having a luminance and chrominance components. The luminance component has a value in a first predetermined interval. The display can render values of luminance components included in a second predetermined interval, of greater length than the first interval. The method includes: determining information representative of image brightness perceived by an observer, based on the values of the first luminance component; calculating an expansion exponent as a function of the determined brightness information; transforming the first luminance components into second luminance components, including calculating an intermediate luminance value by applying the calculated expansion exponent to the first luminance component value and multiplying the intermediate value by the length of the second interval. The expansion exponent is a decreasing function of the determined brightness information.

公开(公告)号：US20180241591A1

公开(公告)日：2018-08-23

申请号：US15550922

申请日：2016-02-15

Applicant: INSTITUT MINES TELECOM

Inventor： Ghaya REKAYA-BEN OTHMAN ,  Asma MEJRI

IPC: H04L25/03 ,  H04L1/00 ,  H04B7/06

Abstract: A method, device, and a computer program are provided to decode a signal received through a transmission channel in a communication system, the received signal being represented by a signal vector. The method comprises: calculating an initial estimate of a transmitted symbol vector carried by the received signal vector; calculating a bound parameter (201) from a linear function of the initial estimate of the transmitted symbol vector, the linear function being defined by a slope coefficient and an intercept coefficient, the method further comprising: determining estimated symbols representative of the transmitted symbols carried by the received signal, the estimated symbols being determined from a set of candidate lattice points, each lattice point comprising a set of components, each component of a candidate lattice point being searched in a search interval (203), the search interval having at least one search interval bound computed from the bound parameter; determining (205) the estimated symbols from the closest lattice point to the received signal vector among the candidate lattice points.

公开(公告)号：US20180191134A1

公开(公告)日：2018-07-05

申请号：US15741230

申请日：2016-06-29

Applicant: INSTITUT MINES-TELECOM ,  University of New Mexico

Inventor： Merek Osinski ,  Frédéric Grillot

IPC: H01S5/10 ,  H01S5/068 ,  H01S5/022 ,  H01S5/06 ,  H01S5/125 ,  H01S5/343

CPC classification number: H01S5/1028 ,  H01S5/021 ,  H01S5/0215 ,  H01S5/0224 ,  H01S5/02248 ,  H01S5/0228 ,  H01S5/0612 ,  H01S5/068 ,  H01S5/101 ,  H01S5/1032 ,  H01S5/125 ,  H01S5/142 ,  H01S5/34313 ,  H01S5/3434

Abstract: The invention concerns a wavelength tunable semiconductor laser comprising a laser gain section (510) optically coupled to an underlying optical waveguide (520). According to an embodiment of the invention, a first and a second passive microring resonators (530, 560) having a whistle geometry, are arranged on both sides of the laser gain section and evanescently coupled with the optical waveguide (520). Highly reflective broadband mirrors (541, 571) are provided at the free ends of optical waveguide branches (240, 270) tangentially connected to the microring resonators. The first and second passive microrings resonators provide an optical feedback to the laser gain section and allow to select the desired wavelength. The laser structure can be implemented according to a III-V/Si technology.

公开(公告)号：US09941568B2

公开(公告)日：2018-04-10

申请号：US15023113

申请日：2014-09-19

Applicant: INSTITUT MINES TELECOM/TELECOM BRETAGNE

Inventor： Jean-Philippe Coupez ,  Sylvain Chenu

IPC: H01P5/107 ,  H01P5/08 ,  H05K1/02

CPC classification number: H01P5/107 ,  H01P5/08 ,  H01P5/087 ,  H05K1/0243

Abstract: The invention relates to a transition device between a printed transmission line on a dielectric substrate and a rectangular waveguide including a front face forming an inlet of the waveguide, a rear face parallel to the front face and forming an outlet of the waveguide, a lower face, an upper face parallel to the lower face, the upper and lower faces extending between the front and rear faces, the waveguide being a block of dielectric material whereof the faces are fully metallized except for the front face and the rear face, the transition device including: a three-dimensional cavity formed in the volume of the waveguide between the inlet of the waveguide, further forming the inlet of the cavity, and the rear face widening, the cavity being at an inlet height of the lower face of the waveguide and ending at a distance from the inlet of the cavity at an outlet height greater than the inlet height; an electrical connection extending from the transmission line along the front face of the waveguide up to the inlet of the three-dimensional cavity.

公开(公告)号：US20170353293A1

公开(公告)日：2017-12-07

申请号：US15539001

申请日：2014-12-24

Applicant: INSTITUT MINES-TELECOM ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Venkat Chandar ,  Aslan Tchamkerten

IPC: H04L7/04 ,  G06F17/15 ,  H04B1/7075 ,  H04L12/26

CPC classification number: H04L7/042 ,  G06F17/15 ,  G06F17/18 ,  H04B1/70752 ,  H04L43/024

Abstract: A method of detecting transient changes in the distribution of a discrete time series includes: operating in a sparse mode wherein, at sniff periods successively repeated at a first rate, at most K test phases are performed, K being an integer superior or equal to two, each test phase consisting of analyzing, by a sampling stopping time determination unit, samples of the time series captured by a sampler at sampling times according to a second rate which is higher than the first rate to provide a positive or negative result of the test phase. If the results of K successive test phases of a sniff period are each positive, the method switches to operate in a dense mode wherein the sampler is operated to continuously capture samples of the time series at sampling times according to the second sampling rate.

公开(公告)号：US20170270307A1

公开(公告)日：2017-09-21

申请号：US15529048

申请日：2014-11-25

Applicant: INSTITUT MINES-TELECOM

Inventor： Sylvain GUILLEY ,  Annelie HEUSER ,  Olivier RIOUL

IPC: G06F21/60 ,  H04L9/06 ,  G06F21/72 ,  G06F21/55

CPC classification number: G06F21/602 ,  G06F21/556 ,  G06F21/72 ,  H04L9/002 ,  H04L9/0618 ,  H04L2209/12

Abstract: A method for recovering secret data of a cryptographic device comprises: a) determining stochastic models of leakages relating respective measurable quantities to internal states or operations of the cryptographic device, the number of greater than the number of masks used by the cryptographic device to conceal the secret data; b) sending command sequences to the device, where each command sequence causes the device to perform a cryptographic operation on at least one respective plaintext using the secret data and the masks; c) during processing of each cryptographic operation, recording a series of measurements of measurable quantities; and d) computing an estimator of secret data by maximizing the conditional joint probability of the recorded measurements given the corresponding plaintexts, averaged over all possible values of the masks. A method for evaluating the security of a cryptographic device is provided.

公开(公告)号：US20170141788A1

公开(公告)日：2017-05-18

申请号：US15348247

申请日：2016-11-10

Applicant: INSTITUT MINES-TELECOM

Inventor： Mohamed-Achraf KHSIBA ,  Ghaya REKAYA BEN-OTHMAN ,  Asma MEJRI

IPC: H03M7/30 ,  H03M13/00

CPC classification number: H03M7/3082 ,  H03M13/616 ,  H04L25/0204 ,  H04L25/0246 ,  H04L25/03242 ,  H04L2025/03426 ,  H04W88/02

Abstract: Embodiments of the invention provides a decoder for decoding a signal received through a transmission channel in a communication system, said signal carrying information symbols selected from a given alphabet and being associated with a signal vector, said transmission channel being represented by a channel matrix, wherein said decoder comprises: a sub-block division unit (301) configured to divide the received signal vector into a set of sub-vectors in correspondence with a division of a matrix related to said channel matrix; a candidate set estimation unit (305) for recursively determining candidate estimates of sub-blocks of the transmitted signal corresponding to said sub-vectors, each estimate of a given sub-block being determined from at least one candidate estimate of the previously processed sub-blocks, wherein said candidate set estimation unit is configured to determine a set of candidate estimates for at least one sub-block of the transmitted signal by applying at least one iteration of a decoding algorithm using the estimates determined for the previously processed sub-blocks, the number of candidate estimates determined for said sub-block being strictly inferior to the cardinal of the alphabet and superior or equal to two, the decoder further comprising a signal estimation unit (306) for calculating an estimate of the transmitted signal from said candidate estimates determined for said sub-blocks.

公开(公告)号：US20160269270A1

公开(公告)日：2016-09-15

申请号：US15034409

申请日：2014-11-04

Applicant: INSTITUT MINES-TELECOM/TELECOM SUDPARIS

Inventor： Stéphane MAAG ,  Xiaoping CHE

IPC: H04L12/26

CPC classification number: H04L43/18 ,  H04L43/12 ,  H04L43/50 ,  H04L63/1408 ,  H04L63/1425

Abstract: System for testing a protocol, which is active on an item of equipment, testing system including a monitor to continuously capture traces, corresponding to sequences of messages of protocol under test, a filter of the traces captured using formalized properties of the demands of protocol under test, to separate the traces into data and control parts, a temporary storage, and transfer module to transfer the filtered traces to a tester so as to emit verdicts by verifying whether the traces satisfy the demands of the formalized properties of the protocol under test, in the event of saturation of the tester leading to the emission of a notification of load, the transfer module interrupts the transfer of filtered traces to the tester and stores the traces at least partially in the temporary storage, particularly only their control parts, before resuming the transfer of filtered traces when the tester is again available.

Abstract translation: 用于测试在设备项目上活动的协议的系统，包括监视器的测试系统，用于连续捕获跟踪，对应于待测协议的消息序列，使用协议要求的形式化属性捕获的跟踪过滤器 测试，将轨迹分离成数据和控制部件，临时存储和传输模块，以将过滤的轨迹传送到测试仪，以便通过验证跟踪是否满足被测协议的形式化属性的要求来发出判决， 在测试仪饱和以致发出负载通知的情况下，传输模块将过滤的迹线中断传输给测试仪，并且将痕迹至少部分地存储在临时存储器中，特别是仅在其控制部件中，然后再恢复 当测试仪再次可用时，过滤痕迹的传输。

公开(公告)号：US20160233568A1

公开(公告)日：2016-08-11

申请号：US15023113

申请日：2014-09-19

Applicant: INSTITUT MINES TELECOM / TELECOM BRETAGNE

Inventor： Jean-Philippe Coupez ,  Sylvain Chenu

IPC: H01P5/08 ,  H05K1/02

CPC classification number: H01P5/107 ,  H01P5/08 ,  H01P5/087 ,  H05K1/0243

Abstract: The invention relates to a transition device between a printed transmission line on a dielectric substrate and a rectangular waveguide including a front face forming an inlet of the waveguide, a rear face parallel to the front face and forming an outlet of the waveguide, a lower face, an upper face parallel to the lower face, the upper and lower faces extending between the front and rear faces, the waveguide being a block of dielectric material whereof the faces are fully metalized except for the front face and the rear face, the transition device including: a three-dimensional cavity formed in the volume of the waveguide between the inlet of the waveguide, further forming the inlet of the cavity, and the rear face widening, the cavity being at an inlet height of the lower face of the waveguide and ending at a distance from the inlet of the cavity at an outlet height greater than the inlet height; an electrical connection extending from the transmission line along the front face of the waveguide up to the inlet of the three-dimensional cavity.

Abstract translation: 本发明涉及介电基片上的印刷传输线与矩形波导之间的过渡装置，该矩形波导包括形成波导入口的前表面，平行于前表面的后表面并形成波导的出口，下表面 ，平行于下表面的上表面，上表面和下表面在前表面和后表面之间延伸，波导是绝缘材料块，其面除了前表面和后表面之外完全金属化，转换装置 包括：在波导的入口之间形成的波导体积中的三维空腔，进一步形成空腔的入口，并且后表面加宽，空腔处于波导的下表面的入口高度处，以及 在大于入口高度的出口高度处与空腔入口相距一定距离; 从传输线沿着波导的前表面延伸到三维腔的入口的电连接。

公开(公告)号：US20150381969A1

公开(公告)日：2015-12-31

申请号：US14765476

申请日：2014-02-03

Applicant: INSTITUT MINES TELECOM ,  EYES TRIPLE SHUT

Inventor： Jean-Louis De Bougrenet de la Tocnaye ,  Emmanuel Daniel ,  Laurent Dupont ,  Daniel Stoenescu ,  Frederic Lucarz

IPC: H04N13/04 ,  G02B27/01 ,  H04N13/00

CPC classification number: H04N13/344 ,  G02B27/0172 ,  H04N13/194 ,  H04N13/334 ,  H04N13/337 ,  H04N13/341 ,  H04N13/398 ,  H04N2013/40

Abstract: A system for displaying N multimedia streams, including multiple pairs of viewing spectacles and a displaying medium. The system obtains N multimedia streams, each stream including two multimedia substreams among 2×N multimedia substreams, and has N sources generating the 2×N substreams on the displaying medium. Each source has an encoder for coding two of the 2×N multimedia substreams, each substream being coded with a set of N coding modes each using a specific set of at least two states, having at least 2N possible combinations of states, each substream being coded with one of the possible combinations of states in order to visualize a given stream from the N multimedia stream. At least one pair spectacles includes a decoder for decoding, for each eyepiece, one of the substreams of the given stream and having N decoding modes corresponding to the N coding modes used for coding the substreams.

Abstract translation: 一种用于显示N个多媒体流的系统，包括多对观看眼镜和显示介质。 该系统获得N个多媒体流，每个流在2×N多媒体子流中包括两个多媒体子流，并且在显示介质上具有产生2×N个子流的N个源。 每个源具有用于编码2×N多媒体子流中的两个的编码器，每个子流用N个编码模式编码，每个N个编码模式使用至少两个状态的特定集合，具有至少2N个可​​能的状态组合，每个子流是 用可能的状态组合之一进行编码，以便从N多媒体流可视化给定流。 至少一对眼镜包括解码器，用于每个目镜解码给定流中的一个子流，并且具有与用于编码子流的N个编码模式对应的N个解码模式。